| 1 | The main issue seems to be the "invalid picture dimension"
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| 2 |
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| 3 | `[indeo3 @ 0x55a6eb70b480] Invalid picture dimensions: 182 x 182!`
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| 4 |
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| 5 | As can be seen at https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/indeo3.c#L174
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| 6 | ffmpeg wants the dimensions to be divisible by 8:
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| 7 |
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| 8 | ```
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| 9 | if (luma_width < 16 || luma_width > 640 ||
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| 10 | luma_height < 16 || luma_height > 480 ||
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| 11 | luma_width & 3 || luma_height & 3) {
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| 12 | av_log(avctx, AV_LOG_ERROR, "Invalid picture dimensions: %d x %d!\n",
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| 13 | luma_width, luma_height);
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| 14 | return AVERROR_INVALIDDATA;
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| 15 | }
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| 16 | ```
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| 17 |
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| 18 | If we remove this constraint from the if statement and recompile ffmpeg it seems to convert your sample videos just fine.
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| 19 | The if statement should look like this:
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| 20 |
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| 21 | ```
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| 22 | if (luma_width < 16 || luma_width > 640 ||
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| 23 | luma_height < 16 || luma_height > 480) {
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| 24 | av_log(avctx, AV_LOG_ERROR, "Invalid picture dimensions: %d x %d!\n",
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| 25 | luma_width, luma_height);
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| 26 | return AVERROR_INVALIDDATA;
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| 27 | }
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| 28 | ```
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| 29 |
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| 30 | When compiling, be sure to enable the encoders you need. For example, h264 must explicitly be enabled and one way as per `man ffmpeg-codecs` is as follows:
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| 31 |
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| 32 | ```
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| 33 | libx264, libx264rgb
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| 34 | x264 H.264/MPEG-4 AVC encoder wrapper.
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| 35 |
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| 36 | This encoder requires the presence of the libx264 headers and library during configuration. You
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| 37 | need to explicitly configure the build with "--enable-libx264".
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| 38 | ```
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| 39 |
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| 40 | So you'll have to run your `./configure` as `./configure --enable-gpl --enable-libx264` before compiling FFmpeg with `make`.
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| 41 |
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| 42 |
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| 43 |
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| 44 | ### This is how i converted the files
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| 45 |
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| 46 | According to `x264 --fullhelp`, `-qp 0` should produce lossless encoding:
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| 47 |
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| 48 | ```
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| 49 | Ratecontrol:
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| 50 |
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| 51 | -q, --qp <integer> Force constant QP (0-81, 0=lossless)
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| 52 | -B, --bitrate <integer> Set bitrate (kbit/s)
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| 53 | ```
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| 54 |
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| 55 | So here goes:
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| 56 |
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| 57 | ```
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| 58 | ~/Development/ffmpeg/ffmpeg -y -i 70_1.mp4 -map 0:0 -c libx264 -qp 0 70_1_fixed.mp4
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| 59 | ~/Development/ffmpeg/ffmpeg -y -i 95_1.mp4 -map 0:0 -c libx264 -qp 0 95_1_fixed.mp4
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| 60 | ```
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| 61 |
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| 62 | During this ffmpeg adjusted the image dimensions to be divisible by 8 so the results of this conversion should cause no further problems.
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