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  • How to use web analytics to acquire new customers

    2 septembre 2020, par Joselyn Khor — Analytics Tips, Marketing

    Are you investing time and money into marketing your business and unsure if it’s paying off ? Web analytics provides the tools and insights to help you know which marketing channels to target and focus on. Without it you might be going in blind and missing opportunities that might’ve been easily found in your metrics.

    Attracting the right visitors to your website

    To help acquire new customer on your website, you firstly need to attract the right visitors to your website. Then capturing their attention and engaging them in your content. Finally you’ll want to convert by driving them through a streamlined funnel/buyer’s journey on your website all backed up by data.

    So, how do you attract audiences to your site with a web analytics tool like Matomo ?

    1. Figure out who your audience is through the Visitor Profiles feature. 
    2. Calculate the Cost of Customer Acquisition (CAC) to plan for growth. To grow and make your business/website sustainable, you’ll need to earn more money from a customer than you spend on acquiring them. How to calculate : Divide marketing spend by the number of customers acquired. 
    3. Figure out which marketing channels e.g., social media, PPC, SEO, content marketing, etc., you should invest more in and which of those you should focus less on.

    How Matomo helps businesses acquire new customers 

    1. Use the Acquisitions feature
    2. Use funnels
    3. Study Visitor Profiles
    4. Focus on SEO efforts
    5. Look at the Multi Attribution feature
    6. Set goals
    7. Set Advanced eCommerce reporting

    1. Use the Acquisitions feature

    Matomo Analytics has a dedicated Acquisition feature to help with some of the heavy-lifting, making it easy for you to formulate targeted acquisition plans.

    Acquisitions feature

    This feature helps you learn who your potential customers are and figure out what marketing channels are converting the best for these visitors.

    • Learn what traffic you get from external websites : Knowing who’s helping you succeed from external websites is a crucial step to be able to focus your attention. Paid sponsorships, guest blog posts or even spending more on advertising on the particular website could result in greater traffic.
    • Social Networks : See which social media channels are connecting with the audiences you want. Take the guesswork out by using only the ones you need. By finding out which social channels your ideal audience prefers, you can generate shareable, convincing and engaging content to drive shares and traffic through to your site.
    • Campaigns : Your marketing team may have spent precious time and resource coming up with campaigns that are designed to succeed, but how can you be so sure ? With Campaigns you can understand what marketing campaigns are working, what aren’t, and shift your marketing efforts accordingly to gain more visitors, more effectively, with less costs. Keep track of every ad and content piece you display across internal and external channels to see which is having the biggest impact on your business objectives. Learn more

    Watch this video to learn about the Acquisitions feature

    2. Use funnels

    Creating conversion funnels gives you the big picture on whether your acquisition plans are paying off and where they may be falling short.

    Funnels feature

    If the ultimate goal of your site is to drive conversions, then each funnel can tell you how effectively you’re driving traffic through to your desired outcome.

    By integrating this with Visitor Profiles, you can view historic visitor profiles of any individual user at any stage of the conversion funnel. You see the full user journey at an individual level, including where they entered the funnel from and where they exited. Learn more

    How to amplify acquisition strategies with Funnels : Use conversion funnels to guide acquisition as you can tell which entry point is bringing the most success and which one needs more attention. Tailor your strategies to zone in on areas that have the most potential. You can identify where your visitors are encountering obstacles from the start, that are stopping them from progressing through their journey on your site.

    3. Study Visitor Profiles

    Visitor Profiles helps you understand visitors on a user-by-user basis, detailing each visitors’ history into a profile which summarises every visit, action and purchase made.

    Visitor Profiles feature

    Better understand :

    • Why your visitors viewed your website.

    • Why your returning visitors continue to view your website.

    • What specifically your visitors are looking for and whether they found it on your website.

    The benefit is being able to see how a combination of acquisition channels play a part in a single buyer’s journey.

    How Visitor Profiles helps with acquisition : By understanding the full behavioural patterns of any individual user coming through from external channels, you’ll see the path that led them to take action, where they may have gotten lost, and how engaged they are with your business over time. This gives you an indication of what kinds of visitors you’re attracting and helps you craft a buyer persona that more accurately reflects the audience most interested in you.

    4. Focus on SEO efforts

    Every acquisition plan needs a focus on maximising your Search Engine Optimization (SEO) efforts. When it comes to getting conclusive search engine referrer metrics, you need to be sure you’re getting ALL the insights to drive your SEO strategy.

    Integrate Google, Bing and Yahoo search consoles directly into your Matomo Analytics. This helps kickstart your acquisition goals as you rank highly for keywords that get the most traffic to your website.

    As another major SEO benefit, you can see how the most important search keywords to your business increased and decreased in ranking over time. 

    How to amplify acquisitions strategies with search engines and keywords : By staying on top of your competitors across ALL search engines, you may uncover traffic converting highly from one search engine, or find you could be losing traffic and business opportunities to your competitors across others.

    5. Look at the Multi Attribution feature

    Multi Attribution lets you measure the success of every touchpoint in the customer journey.

    Multi Attribution feature

    Accurately measure (and assign value to) channels where visitors first engaged with your business, where they came from after that, as well as the final channel they came from before purchasing your product or service.

    No longer falsely over-estimate any marketing channel and make smarter decisions when determining acquisition spend to accurately calculate the Customer Acquisition Cost (CAC). Learn more

    6. Set your Goals

    What are the acquisition goals you want to achieve the most ? The Goals feature lets you measure the most important metrics you need to grow your business.

    Goals feature

    Goals are crucial for building your marketing strategy and acquiring new customers. The more goals you track, the more you can learn about behavioural changes as you implement and modify paths that impact acquisition and conversions over time. You’ll understand which channels are converting the best for your business, which cities/countries are most popular, what devices will attract the most visitors and how engaged your visitors are before converting.

    This way you can see if your campaigns (SEO, PPC, signups, blogs etc.) or optimising efforts (A/B Testing, Funnels) have made an impact with the time and investment you have put in. Learn more

    7. Set Advanced Ecommence reporting

    If your website’s overall purpose is to generate revenue whether it be from an online store, asking for donations or from an online paid membership site ; the Ecommerce feature gives you comprehensive insights into your customers’ purchasing behaviours.

    Ecommerce feature

    When you use Ecommerce analytics, you heavily reduce risk when marketing your products to potential customers because you will understand who to target, what to target them with and where further opportunities exist to have the greatest impact for your business. Learn more

    Key takeaway

    Having the tools to ensure you’re creating a well planned acquisition strategy is key to attracting and capturing the attention of potential visitors/leads, and then driving them through a funnel/buyer’s journey on your website. Because of Matomo’s reputation as a trusted analytics platform, the features above can be used to assist you in making smarter data-driven decisions. You can pursue different acquisition avenues with confidence and create a strategy that’s agile and ready for success, all while respecting user privacy.

    Want to learn how to increase engagement with Matomo ? Click here. We’ll go through how you can boost engagement on your website via web analytics.

  • To concatenate more than two video using FFMPEG

    21 décembre 2018, par Alok Kumar Verma

    I’ve been working on FFMPEG, this is indeed not an easy task since I’ve succeeded in doing some work. I’m done with concatenating two videos using ffmpeg but somehow when it comes to more than two it does not work. So I’m finding out some command to do my task.

    The thing I did is to merge two videos are :

    String complexCommand[] = {"-y", "-i", "/mnt/m_external_sd/Videos/VID-20161221-WA0000.mp4", "-i", "/mnt/m_external_sd/Videos/Brodha V - Aathma Raama [Music Video]_HD.mp4", "-strict", "experimental", "-filter_complex",
                "[0:v]scale=1920x1080,setsar=1:1[v0];[1:v] scale=iw*min(1920/iw\\,1080/ih):ih*min(1920/iw\\,1080/ih), pad=1920:1080:(1920-iw*min(1920/iw\\,1080/ih))/2:(1080-ih*min(1920/iw\\,1080/ih))/2,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1",
                "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264","-crf","27","-q","4","-preset", "ultrafast", savingPath};

    The above is working fine for two videos. I’ve tried altering my code for three videos but it does not work.

    What I’ve done in the above code is :

    • Added one more input after the second one
    • Changed the concat=3:v=1:a=1

    But it does not merge and gave me this error in my LogCat :

    FAILED with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
                                                          built with gcc 4.8 (GCC)
                                                          configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
                                                          libavutil      55. 17.103 / 55. 17.103
                                                          libavcodec     57. 24.102 / 57. 24.102
                                                          libavformat    57. 25.100 / 57. 25.100
                                                          libavdevice    57.  0.101 / 57.  0.101
                                                          libavfilter     6. 31.100 /  6. 31.100
                                                          libswscale      4.  0.100 /  4.  0.100
                                                          libswresample   2.  0.101 /  2.  0.101
                                                          libpostproc    54.  0.100 / 54.  0.100
                                                        Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/Videos/VID-20161221-WA0000.mp4':
                                                          Metadata:
                                                            major_brand     : isom
                                                            minor_version   : 512
                                                            compatible_brands: isomiso2avc1mp41
                                                            encoder         : Lavf57.25.100
                                                          Duration: 00:02:47.09, start: 0.000000, bitrate: 245 kb/s
                                                            Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 854x480 [SAR 1:1 DAR 427:240], 112 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)
                                                            Metadata:
                                                              handler_name    : VideoHandler
                                                            Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
                                                            Metadata:
                                                              handler_name    : SoundHandler
                                                        Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/Videos/Brodha V - Aathma Raama [Music Video]_HD.mp4':
                                                          Metadata:
                                                            major_brand     : mp42
                                                            minor_version   : 0
                                                            compatible_brands: isommp42
                                                            creation_time   : 2013-12-15 13:11:41
                                                          Duration: 00:03:51.08, start: 0.000000, bitrate: 1693 kb/s
                                                            Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 1498 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc (default)
                                                            Metadata:
                                                              handler_name    : VideoHandler
                                                            Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 191 kb/s (default)
                                                            Metadata:
                                                              creation_time   : 2013-12-15 13:11:41
                                                              handler_name    : IsoMedia File Produced by Google, 5-11-2011
                                                        Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/DCIM/Sinha's POP/20150530_073113.mp4':
                                                          Metadata:
                                                            major_brand     : isom
                                                            minor_version   : 0
                                                            compatible_brands: isom3gp4
                                                            creation_time   : 2015-05-30 02:06:06
                                                          Duration: 00:04:48.48, start: 0.000000, bitrate: 3608 kb/s
                                                            Stream #2:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x480, 3478 kb/s, 30.28 fps, 30 tbr, 90k tbn, 180k tbc (default)
                                                            Metadata:
                                                              creation_time   : 2015-05-30 02:06:06
                                                              handler_name    : VideoHandle
                                                              encoder         :                                
                                                            Stream #2:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 125 kb/s (default)
                                                            Metadata:
                                                              creation_time   : 2015-05-30 02:06:06
                                                              handler_name    : SoundHandle
                                                        [Parsed_setsar_1 @ 0xa9ea9220] num:den syntax is deprecated, please use num/den or named options instead
                                                        [Parsed_setsar_4 @ 0xa9ea9310] num:den syntax is deprecated, please use num/den or named options instead
                                                        [Parsed_setsar_1 @ 0xa9ea92c0] num:den syntax is deprecated, please use num/den or named options instead
                                                        [Parsed_setsar_4 @ 0xa9ea93b0] num:den syntax is deprecated, please us

    I’ve tried one more command which works fine for concatenating two videos but still it does not work for more than two videos :

    String complexCommand[] = {"-y", "-i", "/mnt/m_external_sd/Videos/VID-20161221-WA0000.mp4", "-i", "/mnt/m_external_sd/Videos/Brodha V - Aathma Raama [Music Video]_HD.mp4", "-i", "/mnt/m_external_sd/DCIM/Sinha's POP/20150530_073113.mp4", "-strict", "experimental", "-filter_complex",
               "[0:v]scale=480x640,setsar=1:1[v0];[1:v]scale=480x640,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=3:v=1:a=1",
               "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "480x640", "-vcodec", "libx264","-crf","27","-q","4","-preset", "ultrafast", savingPath};

    You can clearly see in the above code that I’ve tried using this for the three videos but still no luck. Will appreciate your help. Thanks.

    EDITS

    After following the LordNeckbeard’s suggestion from the comment section, I’ve used his suggestion in my code but after doing that still no luck however the console’s output got changed and here is the command which I used :

    String complexCommand[] = {"-y", "-i", "/mnt/m_external_sd/Videos/VID-20161221-WA0000.mp4", "-i", "/mnt/m_external_sd/Videos/Brodha V - Aathma Raama [Music Video]_HD.mp4", "-i", "/mnt/m_external_sd/DCIM/Sinha's POP/20150530_073113.mp4", "-strict", "experimental", "-filter_complex",
               "[0:v]scale=480x640,setsar=1[v0];[1:v]scale=480x640,setsar=1[v1];[v0][0:a][v1][1:a] concat=n=3:v=1:a=1",
               "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "480x640", "-vcodec", "libx264","-crf","27","-preset", "ultrafast", savingPath};

    Here you can clearly see that I’ve used setsar=1 and used -crf only.

    And the logs are :

    FAILED with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
                                                            built with gcc 4.8 (GCC)
                                                            configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
                                                            libavutil      55. 17.103 / 55. 17.103
                                                            libavcodec     57. 24.102 / 57. 24.102
                                                            libavformat    57. 25.100 / 57. 25.100
                                                            libavdevice    57.  0.101 / 57.  0.101
                                                            libavfilter     6. 31.100 /  6. 31.100
                                                            libswscale      4.  0.100 /  4.  0.100
                                                            libswresample   2.  0.101 /  2.  0.101
                                                            libpostproc    54.  0.100 / 54.  0.100
                                                          Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/Videos/VID-20161221-WA0000.mp4':
                                                            Metadata:
                                                              major_brand     : isom
                                                              minor_version   : 512
                                                              compatible_brands: isomiso2avc1mp41
                                                              encoder         : Lavf57.25.100
                                                            Duration: 00:02:47.09, start: 0.000000, bitrate: 245 kb/s
                                                              Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 854x480 [SAR 1:1 DAR 427:240], 112 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc (default)
                                                              Metadata:
                                                                handler_name    : VideoHandler
                                                              Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
                                                              Metadata:
                                                                handler_name    : SoundHandler
                                                          Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/Videos/Brodha V - Aathma Raama [Music Video]_HD.mp4':
                                                            Metadata:
                                                              major_brand     : mp42
                                                              minor_version   : 0
                                                              compatible_brands: isommp42
                                                              creation_time   : 2013-12-15 13:11:41
                                                            Duration: 00:03:51.08, start: 0.000000, bitrate: 1693 kb/s
                                                              Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 1498 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc (default)
                                                              Metadata:
                                                                handler_name    : VideoHandler
                                                              Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 191 kb/s (default)
                                                              Metadata:
                                                                creation_time   : 2013-12-15 13:11:41
                                                                handler_name    : IsoMedia File Produced by Google, 5-11-2011
                                                          Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '/mnt/m_external_sd/DCIM/Sinha's POP/20150530_073113.mp4':
                                                            Metadata:
                                                              major_brand     : isom
                                                              minor_version   : 0
                                                              compatible_brands: isom3gp4
                                                              creation_time   : 2015-05-30 02:06:06
                                                            Duration: 00:04:48.48, start: 0.000000, bitrate: 3608 kb/s
                                                              Stream #2:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 720x480, 3478 kb/s, 30.28 fps, 30 tbr, 90k tbn, 180k tbc (default)
                                                              Metadata:
                                                                creation_time   : 2015-05-30 02:06:06
                                                                handler_name    : VideoHandle
                                                                encoder         :                                
                                                              Stream #2:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 125 kb/s (default)
                                                              Metadata:
                                                                creation_time   : 2015-05-30 02:06:06
                                                                handler_name    : SoundHandle
                                                          [Parsed_concat_4 @ 0xa7ea91d0] Input link in2:v0 parameters (size 720x480, SAR 0:1) do not match the corresponding output link in0:v0 parameters (480x640, SAR 1:1)
                                                          [Parsed_concat_4 @ 0xa7ea91d0] Failed to configure output pad on Parsed_concat_4
                                                          Error configuring complex filters.
                                                          Invalid argument

    NOTE : I have tried using setsar=1/1 but still got the same result.

  • ffmpeg Too many bits per frame requested

    18 novembre 2016, par GRaecuS

    I am using ffmpeg to convert videos to mp4 format. Everything works fine except with MOV format.

    The command I use for everything is :

    ffmpeg -i input.mov -strict experimental -sameq -s vga -aspect 1.7777 -vcodec libx264 -preset fast -crf 22 -y output.mp4

    but the output I keep getting is :

    ffmpeg version 0.9, Copyright (c) 2000-2011 the FFmpeg developers
    built on Mar 12 2012 11:01:05 with gcc 4.4.5
    configuration: --enable-libx264 --enable-gpl --disable-yasm
     libavutil    51. 32. 0 / 51. 32. 0
     libavcodec   53. 42. 0 / 53. 42. 0
     libavformat  53. 24. 0 / 53. 24. 0
     libavdevice  53.  4. 0 / 53.  4. 0
     libavfilter   2. 53. 0 /  2. 53. 0
     libswscale    2.  1. 0 /  2.  1. 0
     libpostproc  51.  2. 0 / 51.  2. 0
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x21767a0] Referenced QT chapter track not found

    Seems stream 0 codec frame rate differs from container frame rate: 30.00 (30/1) -> 30.07 (2225/74)
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.mov':
     Metadata:
       creation_time   : 2009-04-04 07:12:29
       comment         : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
       comment-eng     : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
     Duration: 00:00:17.76, start: 0.000000, bitrate: 8100 kb/s
       Stream #0:0(eng): Video: mpeg4 (Advanced Simple Profile) (mp4v / 0x7634706D), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 7968 kb/s, 30.07 fps, 30.07 tbr, 8544k tbn, 30 tbc
       Metadata:
         creation_time   : 2009-04-04 07:12:29
         handler_name    :
       Stream #0:1(eng): Audio: pcm_mulaw (ulaw / 0x77616C75), 16000 Hz, 1 channels, s16, 128 kb/s
       Metadata:
         creation_time   : 2009-04-04 07:12:29
         handler_name    :
    [buffer @ 0x2187f00] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
    [scale @ 0x219c120] w:1280 h:720 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0x4
    [libx264 @ 0x2190d20] using SAR=4/3
    [libx264 @ 0x2190d20] using cpu capabilities: none!
    [libx264 @ 0x2190d20] profile High, level 3.0
    [libx264 @ 0x2190d20] 264 - core 120 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=crf mbtree=1 crf=22.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    [aac @ 0x21917e0] Too many bits per frame requested
    Output #0, mp4, to 'output.mp4':
     Metadata:
       creation_time   : 2009-04-04 07:12:29
       comment         : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
       comment-eng     : EASTMAN KODAK COMPANY  KODAK Z1275 ZOOM DIGITAL CAMERA
       Stream #0:0(eng): Video: h264, yuv420p, 640x480 [SAR 4:3 DAR 16:9], q=-1--1, 90k tbn, 30.07 tbc
       Metadata:
         creation_time   : 2009-04-04 07:12:29
         handler_name    :
       Stream #0:1(eng): Audio: aac, 16000 Hz, 1 channels, s16, 128 kb/s
       Metadata:
         creation_time   : 2009-04-04 07:12:29
         handler_name    :
    Stream mapping:
     Stream #0:0 -> #0:0 (mpeg4 -> libx264)
     Stream #0:1 -> #0:1 (pcm_mulaw -> aac)
    Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height

    It seems the problem is with audio’s bit per frame.
    Which might be the right solution ?